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    <title>Document</title>
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        html{
            height: 100%;
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        body{
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        nav{
            background-color: lightgrey;
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        ul{
             height:5vw;
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        li{
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            list-style-type: none;
            width: 33%;

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        li a{
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            font-size: 3vw;
            color: black;

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        a:hover{
            color: green;
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        section{
              width: 33%;
              margin-top: 20vw;
            display: flex;
            flex-direction: column;
            
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        section img{
            width: 100%;

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            <li><a href="">康桥九溪郡实景图</a></li>
            <li><a href="">康桥九溪郡样板房</a></li>
            <li><a href="">康桥九溪郡效果图</a></li>
         
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